@cillbosby Her confession is evidence. Also even if there is no prints the knife origionally came from their home. The police then have to decide whether that is enough for a conviction. Knowing a little how the Japanese legal system works it most likely will.
All of the mom's interactions with her kids seem quite two-dimensional. I wonder if that's because the author wants to focus on Aya's new relationships, or if some people's relationship with their mothers is just like that.
She literally tells her own mother that she didn't have anything to lose by turning herself in a year ago and people are surprised their interaction is kinda stiff/flat? ^^;
why is no one trying to stop her from turning herself in ???? they all just accept it, they never try to stop her, shes just self destructive and people ignore it